Oh lawd he comin'

dev-util/vulkan-headers/metadata.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>vulkan@gentoo.org</email>
+		<name>Vulkan Project</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">KhronosGroup/Vulkan-Headers</remote-id>
+	</upstream>
+</pkgmetadata>

dev-util/vulkan-headers/vulkan-headers-1.4.328.ebuild

@@ -0,0 +1,46 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+MY_PN=Vulkan-Headers
+inherit cmake
+
+if [[ ${PV} == *9999* ]]; then
+	EGIT_REPO_URI="https://github.com/KhronosGroup/${MY_PN}.git"
+	inherit git-r3
+elif [[ ${PV} == *1.4.328* ]]; then
+        EGIT_REPO_URI="https://github.com/KhronosGroup/${MY_PN}.git"
+        inherit git-r3
+        #
+	EGIT_OVERRIDE_COMMIT_KHRONOSGROUP_VULKAN_HEADERS="v1.4.328"
+	KEYWORDS="~amd64 ~x86"
+else
+	SRC_URI="https://github.com/KhronosGroup/${MY_PN}/archive/vulkan-sdk-${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="amd64 arm arm64 ~hppa ~loong ppc ppc64 ~riscv ~sparc x86"
+	S="${WORKDIR}"/${MY_PN}-vulkan-sdk-${PV}
+fi
+
+DESCRIPTION="Vulkan Header files and API registry"
+HOMEPAGE="https://github.com/KhronosGroup/Vulkan-Headers"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+src_configure() {
+	local mycmakeargs=(
+		-DVULKAN_HEADERS_ENABLE_MODULE=OFF
+		-DVULKAN_HEADERS_ENABLE_TESTS=$(usex test)
+	)
+
+	cmake_src_configure
+}
+
+src_install() {
+	# VULKAN_HEADERS_ENABLE_MODULE doesn't seem to be working so just
+	# delete the modules manually
+	cmake_src_install
+	find "${ED}" -name "*.cppm" -type f -delete || die
+}